Review of practical accuracies of geometrical sensor models of very high resolution satellite imagery

• Autorzy: Chinh Ke L.

Warianty tytułu

PL

Przegląd praktycznych dokładności geometrycznych modeli sensora dla wysokorozdzielczych obrazów satelitarnych

• Języki publikacji: EN

Abstrakty

EN

Today, the new era with Very High Resolution Satellite (VHRS) imageries as IKONOS, QuickBird, EROS, OrbView etc., provides orthophoto in large scale of 1:5 000, to update existing maps, to compile general-purpose or thematic maps. Orthophotomap in the scale of 1:5 000 with Ground Sampling Distance of 0.5 m is one of three important sources for establishing GIS together with a Digital Elevation Model of + 1.0 m aecuraey in height and a topographic map in the scale of I: 10 000. Therefore, the accuracy of products of VHRS imageries affects reliability of GIS. Nevertheless, the accuracy of products of processing VHRS imageries is at first dependent on chosen geometric al sensor models. The understanding of geometrical sensor models of VHRS imageries is very important for improving processing of VHRS imageries. The polynomial models are to provide a simple, generic set of equations to represent the indirect relationship between the ground and its image. The polynomial models or replacement sensor models must not only model the ground-to-image relationship accurately. Physical (or parametrical) model describes directly strict geometric al relations between the terrain and its image, using satellite's orbital parameters and basing on the co-linearity condition. In such model, the above-mentioned multi-source distorting factors are taken into consideration. In this paper a review of practical accuracy of geometrical models of VHRS imageries taken from different research institutions in the world in last years has been presented.

PL

Matematyczny opis zależności pomiędzy zdjęciem i terenem odgrywa ważną rolę w opracowaniu fotogrametrycznym, zwłaszcza dla wysokorozdzielczych obrazów satelitarnych. Obecnie, opracowanie wysokorozdzielczych obrazów satelitarnych dla tworzenia ortofotomap, generowania DEM/DTM jest zagadnieniem najczęściej opisywanym w literaturze. Budowa modeli sensora jest podstawą dla przetwarzania wysokorozdzielczych obrazów satelitarnych. W ostatnich latach, prace badawcze w wielu ośrodkach na świecie koncentrowały się na budowie modeli sensora. Modele sensorów mogą być podzielone na dwie grupy: wielomianowe (lub zastępcze) i parametryczne (lub fizyczne). Modele wielomianowe opisują pośrednią zależność pomiędzy terenem i obrazem bez potrzeby znajomości parametrów orbity. Modele parametryczne opisują zaś bezpośrednią zależność pomiędzy terenem i obrazem przy użyciu parametrów orbity satelity. W niniejszej pracy przedstawiono przegląd praktycznych dokładności modeli wysokorozdzielczych obrazów, zbadanych w ciągu ostatnich lat w różnych ośrodkach naukowo-badawczych

Słowa kluczowe

EN

very high resolution satellite imagery; orthorectification; ground sampling distance; physical and polynomial model; accuracy

PL

fotogrametria; obraz satelitarny

• Wydawca: Komitet Geodezji PAN
• Czasopismo: Geodezja i Kartografia
• Rocznik: 2006
• Tom: Vol. 55, no 4
• Strony: 193--207
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wykr.

Twórcy

autor

Chinh Ke L.

• Warsaw University of Technology Institute of Photogrammetry and Cartography 1 Plac Politechniki, Warsaw, Poland,

Bibliografia

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• Grodecki J., Dial D., Lutes J., (2003): Error propagation in block adjustment of high-resolution satelite images, AS PRS Annual Conference Proceedings, May 2003, Anchorage, Alasca (CD).
• Grodecki J., Dial D., Lutes J., (2004): Mathematical model for 3D feature extraction from multiple satelite images described by RPCs, ASPRS Annual Conference Proceedings, May 2004, Denver, Colorado (CD).
• Hanley H.B., Fraser C.S., (2004): Sensor orientations for high-resolution satelite imagery: further insights into bias-compensated RPCs, IAPRS of 20th Congress, Commission I, WG I/2, Istanbul (CD).
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